Wilton Tools 86500 12" Heavy Duty F-CLAMP COPPER Spark-Duty copper-plated spindle extends the life of the Clamp by protecting the spindle and pad from harmful welding spatter Quick-Twist pads are simple and fast to replace with a V-Groove pad included in every box, or optional serrated pad Ergonomic Wilton-Grip has anti-fatigue properties and provides comfort during repetitive clamping Drop forged arm provides minimal flex under heavy work loads